Six short lines, no punctuation, no capital letters, and a title that sounds like something from a history book: «Killing field». The phrase usually carries heavy human associations, but the poem itself goes somewhere quieter. Judging by the owl, the killing here seems to be the nightly kind, the hunting that goes on in any dark meadow. The poem's central idea is that good fortune is never simply good. A stillness that looks like peace can hide a hunt, and what is luck for one creature is death for another.
The first couplet sets the scene with a startling comparison: "the field at night / empty as good fortune." We expect a simile to clarify, but this one deepens the puzzle. Why would good fortune be empty? It could mean that good fortune is rare, so that the field is bare of it. It could also mean that good fortune is hollow, a lovely word with nothing inside. Either way, the field's emptiness is not reassuring. The title has already told us not to trust it.
Then the grammar does something odd. The word "who" has to refer back to the nearest noun, so "good fortune" turns into a person, a "she" who "is a little lame / on one foot." A figure of speech grows legs, and one of them is bad. Fortune is traditionally imagined as dazzling or blind, so a limping one is a fresh and slightly comic image. It also explains why luck so often arrives late or not at all. The line break makes the same joke with the verse itself: "on one foot" is a short, heavy line of three stressed syllables, so it hobbles. Since a unit of poetic rhythm is called a "foot," the lameness may be a quiet pun, though that is my reading rather than something the poem insists on. The understatement of "a little" keeps the tone dry and casual, as if the speaker were gossiping about an acquaintance.
The last couplet is the strangest. "Who has an owl ready for supper / in her heart" can be read two ways. The owl may be the meal, tucked inside her heart and waiting to be eaten. Or the owl may be the diner, a hungry predator lodged in her heart and about to hunt. The poem refuses to choose, and the doubleness is the point. Fortune is both hunter and hunted, a lame creature that would be easy prey and also something with a killer inside. In an empty-looking field at night, that is exactly the situation. The limping animal and the silent owl are both out there, and the poem folds them into one figure.
Notice, too, the word "supper." It is a homely, almost cozy word, the language of kitchens and families, and it is applied to a predator's kill. The title speaks bluntly, but the body of the poem speaks in domestic whispers, and the gap between the two produces a chill. Nothing in the poem describes violence. It simply treats violence as an ordinary mealtime.
The form supports this hush. There is no rhyme, but the poem is held together by soft sounds: "field," "fortune," "foot" and "for" all share an f, which gives the lines a breathy, nocturnal quality. The three couplets follow a neat pattern. The first has four syllables and then six. The second has six and then three. The third stretches to nine and drops to three on "in her heart." Each stanza ends on a smaller step than it began, and the last drop lands on the heart, the most vulnerable place in the body and the poem's final target. Its compression is close to that of a haiku, though it makes no attempt at a strict form.
What makes the poem worth reading is how much it does with one comparison. It starts as a simile, turns into a tiny myth, and ends as an unsettling thought about luck, which can never be shared out evenly. The field is empty only to a careless eye. For anything small and slightly lame that is crossing it, the emptiness is full of wings.